地震技术在碳酸盐岩生物礁油气储层流体识别中的应用

The Application of Seismic Technology in Fluid Discrimination of Carbonation Reef Oil and Gas Reservoir

流体识别是碳酸盐岩油气储层地震预测技术的重点和难点。以碳酸盐岩生物礁隐蔽油气储层作为研究目标,对地震技术在生物礁油气储层流体识别中的应用进行分析研究。依据含流体储层对地震波的速度和能量的不同影响标志,选择SYB地区实际地震资料进行地震频率属性、吸收衰减属性、低频伴影分析方法、地震波阻抗技术以及叠前AVO地震反演技术的综合应用分析。有效地结合该区SYB1井、SYBc1井、SYB12井等钻井结果和流体识别地震技术成果,得出以上流体识别地震技术对该区生物礁油气储层流体识别是有效的,形成针对该类型储层的针对性较强的叠前、叠后流体识别地震技术系列。

Fluid discrimination is the key point and difficulty point in seismic technology of carbonation oil and gas reservoir.Carbonation concealed reef oil and gas reservoir as study objective to discuss the application of seismic technology in fluid discrimination of reel oil and gas reservoir are choosed.On the basis of affection of fluid reservoir on the seismic wave velocity and power,it discusses the application of seismic frequency attribution,absorption attenuation attribution,low-frequency shadow technology,seismic inversion technology and pre-stack AVO inversion technology on practical seismic data.Comparing the exploration result of well SYB1,well SYBc1 and SYB12 with the result of fluid discrimination by seismic technology,it obtain that it is effective to use seismic technology in reef oil and gas reservoir fluid discrimination,and the pre-stack and post-stack seismic technology series for this style reservoir is formed.